/**
* Normalize the date and time to be in timezone Z.
*
* @param cc used to supply the implicit timezone, used when the value has no explicit timezone
* @return in general, a new DateTimeValue in timezone Z, representing the same instant in time.
* Returns the original DateTimeValue if this is already in timezone Z.
* @throws NoDynamicContextException if the implicit timezone is needed and is not available
*/
public DateTimeValue normalize(XPathContext cc) throws NoDynamicContextException {
if (hasTimezone()) {
return (DateTimeValue) adjustTimezone(0);
} else {
DateTimeValue dt = (DateTimeValue) copyAsSubType(null);
dt.setTimezoneInMinutes(cc.getImplicitTimezone());
return (DateTimeValue) dt.adjustTimezone(0);
}
}
// Rules from XML Schema Part 2
public int compareTo(Object o) {
if (o instanceof DateTimeComparable) {
DateTimeValue dt0 = DateTimeValue.this;
DateTimeValue dt1 = ((DateTimeComparable) o).asDateTimeValue();
if (dt0.hasTimezone()) {
if (dt1.hasTimezone()) {
dt0 = (DateTimeValue) dt0.adjustTimezone(0);
dt1 = (DateTimeValue) dt1.adjustTimezone(0);
return dt0.compareTo(dt1);
} else {
DateTimeValue dt1max = (DateTimeValue) dt1.adjustTimezone(14 * 60);
if (dt0.compareTo(dt1max) < 0) {
return -1;
}
DateTimeValue dt1min = (DateTimeValue) dt1.adjustTimezone(-14 * 60);
if (dt0.compareTo(dt1min) > 0) {
return +1;
}
return INDETERMINATE_ORDERING;
}
} else {
if (dt1.hasTimezone()) {
DateTimeValue dt0min = (DateTimeValue) dt0.adjustTimezone(-14 * 60);
if (dt0min.compareTo(dt1) < 0) {
return -1;
}
DateTimeValue dt0max = (DateTimeValue) dt0.adjustTimezone(14 * 60);
if (dt0max.compareTo(dt1) > 0) {
return +1;
}
return INDETERMINATE_ORDERING;
} else {
dt0 = (DateTimeValue) dt0.adjustTimezone(0);
dt1 = (DateTimeValue) dt1.adjustTimezone(0);
return dt0.compareTo(dt1);
}
}
} else {
return INDETERMINATE_ORDERING;
}
}
